Structural relaxation time and dynamic shear modulus of glassy graphene

Shear modulus reconstruction in dynamic elastography: time harmonic case.

This paper presents a direct inversion approach for reconstructing the elastic shear modulus in soft tissue from dynamic measurements of the interior displacement field during time harmonic excitation. The tissue is assumed to obey the equations of nearly incompressible, linear, isotropic elasto-dynamics in harmonic motion. A finite element discretization of the governing equations is used as a...

Structural relaxation and conductivity relaxation in glassy ionics

Dynamic Shear Modulus of Tricresyl Phosphate and Squalane

We have measured the shear modulus and viscosity of two supercooled liquids: tricresyl phosphate and squalane. In both cases we find that the width of the peak in the imaginary part of the shear modulus narrows as the temperature is lowered toward the glass transition temperature. For tricresyl phosphate, we find no evidence for a decoupling of the viscosity and shear modulus relaxation times f...

Structural relaxation of glassy selenium under γ irradiation

2014 The effect of 03B3-rays on the structural relaxation of glassy selenium near the glass transition has been studied by dilatometry. We show that under irradiation the evolution time scale shifts about one decade. J. Physique LETTRES 42 (1981) L-501-L-502 . Classification Physics Abstracts 61.40D 64.70E 61.80E 15 NOVEMBRE 1981,

Dynamic model of super-arrhenius relaxation rates in glassy materials.

Super-Arrhenius relaxation rates in glassy materials can be associated with thermally activated rearrangements of increasing numbers of molecules at decreasing temperatures. We explore a model of such a mechanism in which stringlike fluctuations in the neighborhood of shear transformation zones provide routes along which rearrangements can propagate, and the entropy associated with critically l...